feat(miner-discovery): goal model — translate MinerGoalSpec into ranker weights

[RenzoMXD]

Summary

Closes #2304.

What changed: Added \GoalModelInput\ and \computeLaneFit\ to \packages/gittensory-engine/src/goal-model.ts. Given a candidate issue's paths/labels and a parsed \MinerGoalSpec, returns a [0, 1] lane-fit score:

• 0 immediately if any candidatePath matches a blockedPath glob (short-circuit)
• 0 immediately if any candidateLabel matches a blockedLabel (case-insensitive)
• 0 if wantedPaths/preferredLabels are set but neither matches
• 0.5 when wantedPaths and preferredLabels are both empty (neutral default)
• matched-criteria / total-criteria fractional ratio otherwise

Re-exports from the engine barrel so the ranker's laneFit parameter can consume the score via the shared package.

Files changed:

• \packages/gittensory-engine/src/goal-model.ts\ — new file: \GoalModelInput\ type, \computeLaneFit\ function, scoped glob helper
• \packages/gittensory-engine/test/goal-model.test.ts\ — new file: 10 unit tests
• \packages/gittensory-engine/src/index.ts\ — re-export \computeLaneFit\ and \GoalModelInput\

Validation:

• 
  pm run test\ (engine package) — 54/54 pass (44 original + 10 new)
• 
  px vitest run test/unit/plan-templates.test.ts test/unit/miner-goal-spec-parser.test.ts test/unit/miner-goal-lane-fit.test.ts\ — 29/29 pass
• 
  pm run typecheck\ — clean
• \git diff --check\ — clean

Linked issue: Closes #2304

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Warning

🟨🟨🟨🟨🟨🟨🟨🟨🟨🟨🟨🟨

⏸️ Gittensory review result - manual review recommended

_{Review updated: 2026-07-03 21:40:44 UTC}

3 files · no blockers · readiness 80/100 · CI green · clean

⏸️ Suggested Action - Manual Review

• The AI review could not be completed for this change, so the gate is held for a human reviewer rather than passed automatically. It re-evaluates on the next update.

Review summary
AI review is already running for this PR head in another Gittensory pass. Gittensory is holding this PR for manual review until that pass completes.

Nits — 1 non-blocking

• AI review already in progress for this PR head — The gate is held for a human reviewer rather than passed automatically; it re-evaluates once the in-flight review completes or on the next update.

Signal	Result	Evidence
Code review	✅ No blockers	No AI review summary
Linked issue	✅ Linked	#2304
Related work	✅ No active overlap found	No same-issue or scoped active PR overlap found.
Change scope	✅ 20/20	Low review scope from cached public metadata (1 linked issue).
Validation posture	❌ 5/25	Preflight is holding this PR: the review lane is unavailable, so it is not ready for automated review.
Contributor workload	✅ 10/10	Author activity: 113 registered-repo PR(s), 60 merged, 7 issue(s).
Contributor context	✅ Confirmed Gittensor contributor	RenzoMXD; Gittensor profile; 113 PR(s), 7 issue(s).
Gate result	⚠️ Not blocking	Advisory; not blocking this PR.

Review context

• Author: RenzoMXD
• Role context: outside_contributor
• Public audience mode: oss maintainer
• Lane context: Repository registration is not available in the local Gittensory cache.
• Public profile languages: not available
• Official Gittensor activity: 113 PR(s), 7 issue(s).
• PR-specific overlap: none found.

Contributor next steps

• Await review-lane availability.
• Refresh registry data or choose a registered active repo.

Signal definitions

• Related work = same linked issue, overlapping active PRs, or title/path similarity.
• Change scope = cached public metadata such as size labels, draft state, and review-burden hints.
• Validation posture = whether the PR provides enough public validation/test evidence for maintainer review.
• Contributor workload = public contributor activity and cleanup pressure, not a repo-wide quality failure.
• Contributor context = public GitHub/Gittensor identity context; non-Gittensor status is not a blocker.

_{🟩 Safe / merged · 🟦 Advisory · 🟨 Held for review · 🟥 Blocked / closed}

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Gittensory approves — the gate is satisfied and CI is green.